diff --git a/doc/string/scrub.rdoc b/doc/string/scrub.rdoc
index 5ace376cdbec85..314b28c465c580 100644
--- a/doc/string/scrub.rdoc
+++ b/doc/string/scrub.rdoc
@@ -5,7 +5,7 @@ With no block given, replaces each invalid sequence
 with the given +default_replacement_string+
 (by default, <tt>"�"</tt> for a Unicode encoding, <tt>'?'</tt> otherwise):
 
-  "foo\x81\x81bar"scrub                             # => "foo��bar"
+  "foo\x81\x81bar".scrub                            # => "foo��bar"
   "foo\x81\x81bar".force_encoding('US-ASCII').scrub # => "foo??bar"
   "foo\x81\x81bar".scrub('xyzzy')                   # => "fooxyzzyxyzzybar"
 
diff --git a/internal/string.h b/internal/string.h
index 9212ce898653be..02e708d34180ff 100644
--- a/internal/string.h
+++ b/internal/string.h
@@ -38,7 +38,7 @@ rb_str_encindex_fastpath(int encindex)
     // Hence you can use fast, single byte algorithms on them, such as `memchr` etc,
     // without all the overhead of fetching the rb_encoding and using functions such as
     // rb_enc_mbminlen etc.
-    // Many other encodings could qualify, but they are expected to be rare occurences,
+    // Many other encodings could qualify, but they are expected to be rare occurrences,
     // so it's better to keep that list small.
     switch (encindex) {
       case ENCINDEX_ASCII_8BIT: